12403126312 has 16 divisors (see below), whose sum is σ = 23270411700. Its totient is φ = 6197683200.

The previous prime is 12403126189. The next prime is 12403126313. The reversal of 12403126312 is 21362130421.

It can be written as a sum of positive squares in 2 ways, for example, as 9236363236 + 3166763076 = 96106^2 + 56274^2 .

It is a super-2 number, since 2×12403126312² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12403126313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471387 + ... + 497002.

Almost surely, 2^12403126312 is an apocalyptic number.

It is an amenable number.

12403126312 is a deficient number, since it is larger than the sum of its proper divisors (10867285388).

12403126312 is a wasteful number, since it uses less digits than its factorization.

12403126312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969996 (or 969992 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12403126312 its reverse (21362130421), we get a palindrome (33765256733).

The spelling of 12403126312 in words is "twelve billion, four hundred three million, one hundred twenty-six thousand, three hundred twelve".